import { ADD_NUMBER, SUB_NUMBER } from "./constants"

const initialState = {
  name: "jay",
  counter: 100,
  banner: []
}

function reducer(state = initialState, action) {
  switch (action.type) {
    case ADD_NUMBER:
      return { ...state, counter: state.counter + action.num}
    
    case SUB_NUMBER:
      return { ...state, counter: state.counter - action.num}

    default:
      return state
  }
}

export default reducer 